CN106864596B

CN106864596B - Front vehicle body structure

Info

Publication number: CN106864596B
Application number: CN201610581540.2A
Authority: CN
Inventors: 金喜柱; 韩胤敬; 车炆洙
Original assignee: Hyundai Motor Co
Current assignee: Hyundai Motor Co
Priority date: 2015-12-14
Filing date: 2016-07-21
Publication date: 2020-07-28
Anticipated expiration: 2036-07-21
Also published as: KR20170070571A; CN106864596A; US10086881B2; US20170166259A1; KR101786676B1; DE102016118326A1

Abstract

A front vehicle body structure is provided. The front vehicle body structure includes a fender upper member extending longitudinally and disposed on left and right sides of the front vehicle body in a width direction, respectively. The front pillar member extends laterally and is disposed on the left and right sides of the front vehicle body in the width direction, respectively. The hood upper lateral reinforcement element extends in the width direction. Further, a front pillar upper member extends longitudinally and is disposed respectively on the left and right sides of the front vehicle body in the width direction, and is disposed rearward in the longitudinal direction and upward in the lateral direction with respect to the fender upper member. Further, a joint is coupled with a front end of the fender upper member, the front pillar upper member, and the cowl upper cross reinforcement member, respectively.

Description

Front vehicle body structure

Cross Reference of Related Applications

This application claims priority and benefit from korean patent application No. 10-2015-.

Technical Field

The present invention relates to a front vehicle body structure, and more particularly, to a front vehicle body structure formed by coupling space frames to each other.

Background

Generally, a front body of a vehicle has a frame structure located forward from the vehicle in a longitudinal direction thereof to form an engine compartment. The front body of the vehicle includes a front end module forming a front direction of an engine compartment and includes a cooling module and a head lamp. The front fender elements form the left and right sides of the engine compartment, within which the suspension system is disposed and provide a cavity with wheels inside. Further, an instrument panel is disposed rearward from the engine compartment and separates the passenger compartment and the engine compartment.

Also, the front side members extend in the longitudinal direction of the vehicle on the lower left and right sides of the engine compartment to reinforce the structural rigidity of the front vehicle body. The sub-frame is provided at a lower portion of the front side member, and is coupled with the front side member to mount and support an engine, a transmission, a suspension system, and the like, which are mounted in an engine compartment.

Also, the high performance vehicle reduces the weight of the vehicle body to improve the drivability of the vehicle. For example, a high performance vehicle includes a vehicle body formed by coupling a space frame manufactured using a lighter aluminum material (compared to steel) for forming a light vehicle body. Currently, there is a need for a vehicle that increases the structural rigidity of a front body and improves the R & H (Riding & Handling) performance and drivability of the vehicle by firmly connecting a front pillar member, a fender member, and a cover member to each other.

The above information disclosed in this technical background is only for enhancement of understanding of the background of the present invention and therefore, may contain information that does not constitute prior art that is known to those skilled in the art in this country.

Disclosure of Invention

The invention provides a front vehicle body structure, which has the following advantages: by firmly connecting the front pillar member, the fender member, and the cover member to each other through one joint, the structural rigidity of the front vehicle body is increased and the R & H performance and drivability of the vehicle are improved.

An exemplary embodiment provides a front vehicle body structure, which may include: a fender upper member that extends in a longitudinal direction of a vehicle and is provided on a left side and a right side of a front vehicle body in a width direction of the vehicle, respectively; a front pillar element configured to extend in a lateral direction of the vehicle and disposed on left and right sides of the front vehicle body in a width direction of the vehicle, respectively; a cowl upper lateral reinforcement member configured to extend in a width direction of the vehicle; a front pillar upper element configured to extend in a longitudinal direction of the vehicle, provided on left and right sides of the front vehicle body in a width direction of the vehicle, respectively, and positioned rearward in the longitudinal direction of the vehicle and upward in a lateral direction of the vehicle with respect to the fender upper element; and a joint configured to couple with a front end of the fender upper element, the front pillar upper element, and the cowl upper cross reinforcement element, respectively.

The front ends of the fender upper element, the front pillar upper element and the cowl upper cross reinforcement element may be inserted into and coupled with the interior of the joint, respectively. The front vehicle body structure may further include a rear upper lateral reinforcement member that extends in the width direction of the vehicle to couple the left and right fender upper members to each other. The fender upper member, the front pillar upper member, and the cowl upper cross reinforcement member may be formed of an aluminum material.

The joint may include: a joint body having a polygonal shape; and a hood hinge mounting part disposed forward in a longitudinal direction of the vehicle from the joint main body and may include a horizontal surface and a vertical wall portion, and a hood hinge may be coupled to the hood hinge mounting part. The joint may further include: a door hinge member mounting part formed on an outer surface of the joint body in the width direction of the vehicle, having the form of a wall surface, and may include a mounting hole, and a door hinge member may be positioned on the door hinge member mounting part.

The joint may further include: a cover cross bar mounting member disposed adjacent the door hinge mounting member within the outer surface and may include a mounting aperture; and the hood cross bar may be engaged with the hood cross bar mounting part to be supported. The joint may further include a reinforcing rib coupling the mounting holes to each other and protrude outward in a width direction of the vehicle. A reinforcing rib is formed radially on an inner surface of the joint main body toward an inner side in a width direction of the vehicle.

The first coupling groove may be positioned to be inclined toward a front lower portion of the vehicle in a lateral direction of the vehicle of the joint main body in the upper portion of the joint to couple a front end of the front pillar upper element with the first coupling groove. A second coupling groove may be formed on an inner surface of the joint body toward an inner side of the joint body in a width direction of the vehicle to insert and couple a tip end of the front pillar member in a lateral direction of the vehicle. The fender upper member may be inserted into an interior of the joint body and may be attached to an inner surface of the front pillar member in a vehicle width direction of the front pillar member, and may be coupled to the inner surface of the front pillar member and the joint body, respectively.

The front pillar upper element may have a plurality of sections arranged adjacent to each other. The plurality of segments may be formed with segments having a square shape and sharing an adjacent partition wall. A plurality of radial reinforcing ribs may be formed under the hood hinge mounting part of the joint main body. A mounting boss may project inwardly of the front pillar element in the door hinge mounting member.

An assembly boss may protrude within the hood cross bar, and an assembly bolt may be inserted into the assembly boss to engage the assembly boss with the hood cross bar. The hood lateral bar may include a flange, and the flange may extend in a longitudinal direction and a lateral direction of the vehicle by an assembly bolt formed to pass through the flange, and may be engaged with a side outer panel disposed at an outer portion in a width direction of the vehicle.

According to the exemplary front vehicle body structure of the present invention, the structural rigidity of the vehicle body can be increased by connecting the front pillar member, the fender member, and the cover member to each other with one joint formed of an extruded material. Since a separate reinforcing material is not required due to the increase in structural rigidity of the vehicle body, the weight of the vehicle, the number of parts, and the manufacturing cost can be reduced. Further, the torsional rigidity of the front vehicle body can be increased to improve the R & H performance and the driving stability of the vehicle. Since the rigidity of the front vehicle body is increased, it is possible to safely protect the passenger when an accident involving a vehicle collision occurs. For example, the rigidity of the passenger compartment may reduce injury to passengers when a rollover occurs.

By coupling the front pillar member, the fender member, and the hood member manufactured in the extrusion process with the joint manufactured by the die-casting process, the coupling strength between the vehicle body member and the joint can be increased. By optimizing the shape of the joint produced by the die-casting process at high production costs, the production costs of the front vehicle body and the weight of the vehicle body can be reduced.

Drawings

The above and other features of the present invention will now be described in detail with reference to the exemplary embodiments thereof as shown in the accompanying drawings, which are given below by way of illustration only and thus are not limiting of the invention, and in which:

fig. 1 is an exemplary perspective view illustrating a front vehicle body structure according to an exemplary embodiment of the present invention;

FIG. 2 is an exemplary plan view illustrating a front vehicle body structure according to an exemplary embodiment of the present invention;

FIG. 3 is an exemplary enlarged perspective view illustrating a front vehicle body structure according to an exemplary embodiment of the present invention;

FIG. 4 is an exemplary exploded perspective view illustrating a rear portion of a front vehicle body structure according to an exemplary embodiment of the present invention;

fig. 5 is an exemplary perspective view showing a state in which a suspension device according to an exemplary embodiment of the present invention is mounted in a front vehicle body structure;

fig. 6 is an exemplary perspective view showing a coupled state between a front lower member and a reinforcing member thereof in the front vehicle body structure according to an exemplary embodiment of the present invention;

FIG. 7 is an exemplary perspective view illustrating a lower portion of FIG. 6 according to an exemplary embodiment of the present invention;

fig. 8 is an exemplary perspective view showing main components of a front vehicle body structure according to an exemplary embodiment of the invention;

fig. 9 is an exemplary perspective view illustrating a first joint according to an exemplary embodiment of the present invention;

FIG. 10 is an exemplary perspective view illustrating the first joint viewed from another angle according to an exemplary embodiment of the present invention;

FIG. 11 is an exemplary front view illustrating a first joint according to an exemplary embodiment of the present invention;

FIG. 12 is an exemplary bottom view illustrating a first joint according to an exemplary embodiment of the present invention;

fig. 13 is an exemplary side view illustrating a first joint coupled with a front pillar element and a front pillar upper element according to an exemplary embodiment of the present invention;

FIG. 14 is an exemplary enlarged view illustrating major components of FIG. 13 according to an exemplary embodiment of the present invention;

FIG. 15 is an exemplary cross-sectional view taken along line A-A of FIG. 14, according to an exemplary embodiment of the present invention;

FIG. 16 is an exemplary plan view illustrating a first joint coupled with a front pillar upper element, a cowl upper cross reinforcement element, and a fender upper element according to an exemplary embodiment of the present invention;

FIG. 17 is an exemplary enlarged view illustrating major components of FIG. 16 according to an exemplary embodiment of the present invention;

FIG. 18 is an exemplary perspective view illustrating a first joint with a hood hinge installed according to an exemplary embodiment of the present invention;

FIG. 19 is the exemplary side view of FIG. 18, according to an exemplary embodiment of the present invention;

FIG. 20 is an exemplary cross-sectional view taken along line B-B of FIG. 18, according to an exemplary embodiment of the present invention;

FIG. 21 is an exemplary side view illustrating a first joint with a door hinge installed according to an exemplary embodiment of the present invention;

FIG. 22 is an exemplary cross-sectional view taken along line C-C of FIG. 21, according to an exemplary embodiment of the present invention;

FIG. 23 is an exemplary perspective view illustrating a first joint engaged with a cowl cross bar according to an exemplary embodiment of the present invention;

FIG. 24 is a side view of FIG. 23, according to an exemplary embodiment of the present invention;

FIG. 25 is an exemplary cross-sectional view taken along line D-D of FIG. 23, according to an exemplary embodiment of the present invention;

fig. 26 is an exemplary perspective view illustrating a second joint of the front vehicle body structure according to the exemplary embodiment of the invention;

fig. 27 is an exemplary perspective view illustrating a third joint of the front vehicle body structure according to the exemplary embodiment of the invention;

fig. 28 is an exemplary perspective view showing a coupled state of a front upper-side member and a dash cross-member of the front vehicle body structure according to the exemplary embodiment of the present invention;

fig. 29 is an exemplary exploded perspective view showing a front upper-side member and a fourth joint of a front vehicle body structure according to an exemplary embodiment of the invention;

FIG. 30 is an exemplary cross-sectional view taken along line E-E of FIG. 28, according to an exemplary embodiment of the present invention;

fig. 31 is an exemplary perspective view illustrating a fourth joint of the front vehicle body structure according to the exemplary embodiment of the present invention; and

fig. 32 is an exemplary perspective view illustrating a rear portion of the fourth joint of the front vehicle body structure according to the exemplary embodiment of the present invention.

Detailed Description

Hereinafter, exemplary embodiments of the present invention are described with reference to the accompanying drawings. While the invention is described in conjunction with the exemplary embodiments, it is to be understood that the description is not intended to limit the invention to those exemplary embodiments. On the contrary, the invention is intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other exemplary embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. For example, irrelevant components are not shown for clarity of description of the invention, and the thicknesses of layers and regions are exaggerated for clarity. Further, when a layer is referred to as being "on" another layer or substrate, it can be directly on the other layer or substrate, or a third layer can be disposed therebetween.

It should be understood that the term "vehicle" or "vehicular" or other similar terms as used herein generally encompass motor vehicles (such as passenger automobiles including Sport Utility Vehicles (SUVs), buses, trucks, various commercial vehicles), watercraft including a variety of boats and ships, aircraft, and the like, and includes hybrid vehicles, electric vehicles, plug-in hybrid vehicles, hydrogen-powered vehicles, and other alternative fuel vehicles (e.g., fuel derived from resources other than petroleum).

Referring to fig. 1 to 3, a front vehicle body structure according to an exemplary embodiment of the present invention may include a front lower member 1, a front upper member 2, and a fender upper member 3 extending in a longitudinal direction of a vehicle.

In the lateral direction of the vehicle, the front lower element 1 may be disposed at the bottom, the front upper element 2 may be disposed at the central region, and the fender upper element 3 may be disposed at the top. The front regions of the left and right front lower elements 1 in the longitudinal direction of the vehicle may be coupled to each other by a front lower transverse reinforcement element 11 that may extend in the width direction of the vehicle. The central regions may be coupled to each other by a central lower transverse reinforcing element 12 extending in the width direction of the vehicle. The rear regions may be coupled to each other by a dash lower lateral reinforcement member 50 extending in the width direction of the vehicle. The front regions of the left and right front upper side elements 2 in the longitudinal direction of the vehicle may be coupled to each other by a bumper member 40 extending in the width direction of the vehicle. The rear regions may be connected to each other by a center-of-dash cross reinforcement member 51 extending in the width direction of the vehicle.

The left and right front upper side members 2 and the dash panel center lateral reinforcement member 51 may be coupled to each other by two inclined reinforcement members 21 inclined toward the width direction and the longitudinal direction of the vehicle. The two inclined reinforcing members 21 may be inclined toward the widthwise outer side from a central region in the longitudinal direction of the dash panel center lateral reinforcing member 51 (i.e., the width direction of the vehicle), and may be coupled with the left and right front upper side members 2.

Referring to fig. 2, the front upper member 2 may be provided to widen to the outside in the width direction as compared with the front lower member 1. Therefore, since the front upper member 2 can absorb and reduce the impact energy at the time of a frontal overlap collision accident of the vehicle, the overlap collision response performance can be improved. Two front pillar elements 4 extending in the lateral direction of the vehicle may be provided on the left and right sides in the width direction of the vehicle.

The front regions of the left and right fender upper elements 3 in the longitudinal direction of the vehicle may be coupled to each other by a front upper lateral reinforcement element 31 extending in the width direction of the vehicle. The front end of the rear direction may be coupled to the left and right front pillar elements 4 by a first joint 60. Both ends of the cowl upper cross reinforcement member 52 extending in the width direction of the vehicle may be coupled with left and right first joints 60.

Referring to fig. 4, rear regions of the left and right fender upper elements 3 in the longitudinal direction of the vehicle may be coupled to each other by a rear upper lateral reinforcement element 32 extending in the width direction of the vehicle. A cover panel 53 extending in the width direction of the vehicle may be interposed between the hood upper lateral reinforcement member 52 and the rear upper lateral reinforcement member 32 to be integrally joined with the hood upper lateral reinforcement member 52 and the rear upper lateral reinforcement member 32.

The front lower member 1, the front upper member 2, and the fender upper member 3 may be coupled to each other by a reinforcement panel 70 configured to extend in the lateral direction of the vehicle. The front lower element 1 and the front upper element 2 may be coupled to each other in a substantially central region in the longitudinal direction of the vehicle by a front-side reinforcing element 80 configured to extend in the lateral direction of the vehicle.

The second joint 62 may be coupled with the connection area of the front lower element 1 and the central lower transverse reinforcing element 12. The third joint 64 may be coupled with the connecting region of the front lower side member 1 and the dash lower lateral reinforcement member 50. The fourth joint 66 can be coupled with the front upper element 2 and the fifth joint 68 can be coupled with the fender upper element 3. The first to fifth joints 60 to 68 may be formed of an aluminum material through a die-casting process. The respective element may be made of an aluminum material by a die casting process.

Referring to fig. 5, both ends of the lower arm 90 are configured with suspension arms, and may be engaged with the second and

third joints

62 and 64, respectively, to be supported. Both ends of the upper arm 92 may be configured with suspension arms, and may be engaged with the fourth joints 66, respectively, to be supported. The stabilizer bar 94 may be engaged with the fourth joint 66 to be supported, and may extend in a width direction of the vehicle and may be configured to adjust moment movement of the vehicle body.

The fourth joint 66 and the fifth joint 68 may be coupled to each other by a shock absorber mounting reinforcement element 100, and an upper portion of the shock absorber 96 including the suspension system may be coupled with the fifth joint 68 to be supported. Reference numeral 110 denotes a brake disc configured to brake a wheel, not shown. Reference numeral 120 denotes a knuckle for steering the wheel. The lower arm 90 and the upper arm 92 may be engaged with the knuckle 120 to be supported.

Referring to fig. 6 and 7, the second joint 62 may be coupled with the front lower member 1 and the central lower transverse reinforcement member 12. The third joint 64 may be coupled with the front lower side member 1 and the dash lower lateral reinforcement member 50. Referring to fig. 8, the fender upper element 3, the front pillar element 4 extending in the lateral direction of the vehicle, the cowl upper lateral reinforcement element 52, and the front pillar upper element 150 may be coupled to each other in the first joint 60. As described above, the fender upper element 3, the front pillar element 4, the cowl top lateral reinforcement element 52, and the front pillar upper element 150 may be concentrated at one point, and may be connected to each other by the first joint 60 to increase the rigidity of the front vehicle body structure.

Referring to fig. 9 to 12, the first joint 60 may include: a joint body 62 having a polygonal shape; a hood hinge mounting part 64 disposed forward in the longitudinal direction of the vehicle from the joint main body 62 and may include a horizontal surface and a vertical wall portion; a door hinge mounting part 66 formed on an outer surface of the joint main body 62 in the width direction of the vehicle, having the form of a wall surface, and may include two mounting holes 660; and a cover cross bar mounting member 68 disposed adjacent door hinge mounting member 66 in outer surface 622 and may include two mounting holes 680.

A plurality of reinforcing ribs 682 coupling the plurality of mounting holes 680 to each other may protrude outward in the width direction of the vehicle. Further, a plurality of reinforcing ribs 626 that reinforce the rigidity of the joint main body 62 may be formed radially inward in the inner surface 624 in the width direction of the vehicle. The plurality of reinforcing ribs 626 may support and distribute a load input to the first joint 60, and may increase rigidity.

Referring to fig. 11 and 13, the first coupling groove 628 may be inclined toward a front lower portion of the vehicle in a lateral direction of the vehicle of the joint main body 62 in an upper portion of the first joint 60. The front end of the front pillar upper 150 may be inserted into the first coupling groove 628 to couple the front pillar upper 150 along the edge of the front end by welding (W). As described above, the front pillar upper member 150 may be inserted into the inside of the joint main body 62 of the first joint 60, and may be coupled by welding to improve coupling rigidity.

Referring to fig. 12 and 13, a second coupling groove 629 may be formed on the inner surface of the connector body 62. The top end of the front pillar member 4 in the lateral direction of the vehicle may be inserted into the second coupling groove 629 to couple the front pillar member 4 along the edge of the top end thereof by welding (W). As described above, the front pillar member 4 may be inserted into the inside of the joint main body 62 of the first joint 60, and may be coupled with the joint main body 62 by welding to improve coupling rigidity.

Referring to fig. 14 and 15, the fender upper member 3 may be inserted into the interior of the joint body 62 and may attach the inner surface 40 of the front pillar member 4 in the width direction of the vehicle, and may be coupled with the inner surface 40 of the front pillar member 4 and the joint body 62 by welding (W), respectively. The front pillar upper member 150 may be formed of an extruded material (extruded material) to have a plurality of sections. The plurality of segments may be formed with three segments having a square shape, sharing adjacent partitions.

Referring to fig. 18-20, the hood hinge 160 may be disposed within the hood hinge mounting member 64 to support the hood hinge mounting member 64. Assembly nut 625 may be inserted through hood hinge mounting component 64 for attachment to the hood hinge mounting component by welding. In order to reinforce the rigidity of the hood hinge mounting part 64, a plurality of radial reinforcing ribs 623 may be formed below the hood hinge mounting part 64 of the joint main body 62. As described above, since a separate reinforcing element or a separate reinforcing structure that reinforces the hood hinge mounting part 64 by the plurality of reinforcing ribs 623 is not required, it is possible to reduce the number of parts and to reduce the weight of the vehicle.

Referring to fig. 21 and 22, the door hinge 170 may be disposed within the door hinge mounting member 66 and may be configured to engage the door hinge mounting member. Mounting bosses 627 may protrude into the interior of front pillar element 4 around mounting holes 660 of door hinge mounting component 66. The assembly nut 625 may be inserted into the mounting boss 627 to be coupled by welding for mounting the door hinge 170 for more stable support without a separate reinforcing member and a separate reinforcing structure. Referring to fig. 23-25, the shroud cross bar 180 may be engaged with the shroud cross bar mounting member 68. In other words, the hood lateral bar 180 may extend in the width direction of the vehicle.

The assembly bosses 684 may protrude into the mounting holes 680 of the shroud cross bar mounting member 68, and the assembly bolts 686 may be inserted into the assembly bosses 684 to engage the shroud cross bar 180 with the assembly bosses 684. Further, the shroud cross bar 180 may include a flange 182. The flange 182 may extend in the longitudinal and transverse directions of the vehicle by an assembly bolt 686 formed through the flange 182, and may be engaged with the side outer panel 190 disposed outward in the width direction of the vehicle to be supported. In other words, side panel 190 may be interposed between cover cross bar 180 and assembly boss 684. As described above, the cowl cross bar 180 may be installed to be more stably supported without a separate reinforcing member and a separate reinforcing structure.

Referring to fig. 26, the second joint 62 may include: a second joint body 622 having a substantially square plate shape; an upper flange 624 provided from the top edge of the second joint main body 622 toward the inside in the width direction of the vehicle, the upper flange being couplable with the top surface of the front lower member 1 in the lateral direction of the vehicle; and a lower flange 626 (refer to fig. 7) bent inward in the width direction of the vehicle from the bottom edge of the second joint body 622, which may be coupled with the bottom surface of the front lower member 1 in the lateral direction of the vehicle.

One end of the front side reinforcing member 80 may be inserted and coupled to the coupling flange 625, and the coupling flange may protrude upward in the lateral direction of the vehicle in the upper flange 624. Further, the upper flange 624 may include two extension bosses 627 extending inward in the width direction of the vehicle from the upper flange 624, and may be configured to engage with the central lower lateral reinforcing element 12 in two points. Two engagement bosses 629 may protrude on the second joint body 622, and may include two engagement holes 628 provided to be spaced apart in the longitudinal direction of the vehicle. The ends of the lower arm 90 may be engaged and coupled with the two engagement holes 628. A plurality of radial ribs 623 may integrally protrude on the second joint body 622 to increase structural rigidity by connecting two engagement bosses 629 to each other, and a plurality of radial ribs may connect each engagement boss 629 to the second joint body 622.

Referring to fig. 27, the third joint 64 may include: a third joint body 642 having a substantially square plate shape; an upper flange 644 that is bent inward in the width direction of the vehicle from a top edge of the third joint main body 642 to couple with a top surface of the front lower member 1 in the lateral direction of the vehicle; and a lower flange 646 (refer to fig. 7) bent inward in the width direction of the vehicle from a bottom end edge of the third joint main body 642, the lower flange being couplable with the bottom surface in the lateral direction of the vehicle from a bottom end edge of the third joint main body 642.

The third joint 64 may further include an upper extension flange 645 that extends in the rear direction from a rear tip edge of the third joint body 642 in the longitudinal direction of the vehicle, and may be provided at an upper portion in the lateral direction of the vehicle. The lower extension flange 647 extends from a rear bottom end edge of the third joint body 642 in the longitudinal direction of the vehicle in the rear direction, and may be provided at a lower portion in the lateral direction of the vehicle. A coupling groove 649 may be formed between the upper extension flange 645 and the lower extension flange 647. The dash lower lateral reinforcement element 50 may be inserted into and coupled with the coupling groove 649.

The two engagement bosses 643 may protrude on the third joint body 642, and may include two engagement holes 648 provided to be spaced apart in the longitudinal direction of the vehicle. The first or second end of the lower arm 90 may be configured to engage and couple with the two engagement holes 628. A plurality of radial ribs 641 may integrally protrude with respect to the third connector body 642 to increase structural rigidity by connecting two engagement bosses 643 to each other and by connecting each engagement boss 643 with the third connector body 642.

Referring to fig. 28, the dash panel center lateral reinforcement member 51 may be coupled to the front pillar member 4 through the rear side reinforcement member 130. The front upper side member 2 may be connected to the dash transverse reinforcement member 50 through the rear lower reinforcement member 140. The fourth joint 66 may be mounted on the front upper member 2, a front portion of the fourth joint 66 in the longitudinal direction of the vehicle may be coupled with the front-side reinforcing member 80, and a rear portion of the fourth joint 66 may be coupled with the rear-side reinforcing member 130 and the rear-side lower reinforcing member 140. The shock absorber mounting reinforcement element 100 may be inserted into and coupled with the interior of the fourth joint 66.

Referring to fig. 29 and 30, the front upper member 2 may include a double closed surface 22 configured to extend in a longitudinal direction (e.g., upward and downward). The upper wall 23, the central wall 24 and the lower wall 25 of the double closure surface 22 can be partially removed to couple with the front upper element 2 through a cut area covering the fourth joint 66.

Referring to fig. 31 and 32, the fourth joint 66 may include: a fourth joint body 662 having a substantially square plate shape; an upper flange 664 that is bent inward in the vehicle width direction from the top edge of the fourth joint main body 662, the upper flange being coupled with the top surface of the front upper member 2 in the vehicle lateral direction; and a lower flange 666 that is bent inward in the width direction of the vehicle from a bottom end edge of the fourth joint main body 662, the lower flange being coupled with a bottom surface in the lateral direction of the vehicle from a bottom end edge of the fourth joint main body 662.

The coupling groove 661 may be formed at a substantially central region of the fourth connector 66 in a longitudinal direction of the fourth connector body 662. The shock absorber installation reinforcing member 100 may be inserted into and coupled with the coupling groove 661. Two engagement bosses 665 having two engagement holes 663 may be configured to engage with the end portions of the upper arms 92 forward from the longitudinal direction of the vehicle based on the coupling grooves 661. The two engagement bosses 665 having the two engagement holes 663 may be configured to engage with the first or second end portion of the upper arm 92 rearward from the longitudinal direction of the vehicle based on the coupling groove 661. The two engagement bosses 665 may be coupled to each other by a plurality of radial stiffening ribs 667 to increase structural rigidity.

The lower flange 666 may include a first coupling flange 668 into which the front-side reinforcing element 80 may be inserted and coupled. The rear lower reinforcement element 140 may be inserted into and coupled with the second coupling flange 669. The third flange 670 may be provided at a rear end of the fourth joint body 662 in the longitudinal direction to insert the rear reinforcing member 130 and couple the rear reinforcing member with the third flange 670. The lower flange 666 may include a support groove 671 into which the stabilization rod 94 may be inserted to be supported. The engagement hole 672 may be configured to engage the stabilizer bar 94 with the lower flange 666 via a mounting bracket, not shown. The first, second, and

third coupling flanges

668, 669, and 670 can include segments having a shape that is substantially "ㄈ" (e.g., two parallel lines connected by a vertical line, forming a right angle at each connection point).

As described above, the exemplary embodiments of the present invention are disclosed herein, but the present invention is not limited to the disclosed exemplary embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the appended claims, detailed description and drawings of the present invention.

Description of the symbols

1: front underside element

2: front upper side element

3: mudguard upper part

4: front pillar element

11: front lower transverse reinforcement element

12: central lower transverse reinforcement element

21: tilt reinforcement element

31: front upper transverse reinforcement element

32: rear upper transverse reinforcement element

40: safety rod

50: lower transverse stiffening element for instrument panel

51: central transverse reinforcing element for instrument panel

52: upper transverse stiffening element

53: cover panel

60: first joint

62: second joint

64: third joint

66: fourth joint

68: fifth joint

70: reinforced panel

80: front side reinforcing element

90: lower arm

92: upper arm

94: stabilizer bar

96: shock absorber

100: damper mounting reinforcement element

130: rear side reinforcing member

140: rear lower reinforcement element

150: front pillar upper element

160: door hinge joint piece

170: engine cover hinge

180: transverse bar of cover

190: a side exterior panel.

Claims

1. A front vehicle body structure comprising:

a fender upper member that extends in a longitudinal direction of a vehicle and is provided on a left side and a right side of a front vehicle body in a width direction of the vehicle, respectively;

a front pillar element configured to extend in a lateral direction of the vehicle and disposed on left and right sides of the front vehicle body in a width direction of the vehicle, respectively;

a cowl upper lateral reinforcement member configured to extend in a width direction of the vehicle;

a front pillar upper element configured to extend in a longitudinal direction of the vehicle, provided on left and right sides of the front vehicle body in a width direction of the vehicle, respectively, and positioned rearward in the longitudinal direction of the vehicle and upward in a lateral direction of the vehicle with respect to the fender upper element;

a joint configured to couple with a front end of the fender upper element, the front pillar upper element, and the cowl upper cross reinforcement element, respectively; and

a rear upper lateral reinforcement element configured to extend in a width direction of the vehicle to couple left and right fender upper elements to each other.

2. The front vehicle body structure of claim 1, wherein front ends of the fender upper element, the front pillar upper element, and the cowl upper cross reinforcement element are each configured to be inserted into and coupled with an interior of the joint.

3. The front vehicle body structure according to claim 1, wherein the fender upper element, the front pillar upper element, and the cowl upper cross reinforcement element are formed of an aluminum material.

4. The front vehicle body structure according to claim 1, wherein the joint includes:

a joint body having a polygonal shape; and

a hood hinge mounting part disposed forward in a longitudinal direction of the vehicle from the joint main body and having a horizontal surface and a vertical wall portion,

wherein a hood hinge is mounted on the hood hinge mounting part.

5. The front vehicle body structure of claim 4, wherein the joint further comprises: a door hinge member mounting part provided on an outer surface of the joint body in a width direction of the vehicle, having a form of a wall surface, and having a mounting hole, and

the door hinge member is disposed on the door hinge member mounting part.

6. The front vehicle body structure according to claim 5, wherein the joint includes:

a hood cross bar mounting member abutting the door hinge mounting member in the outer surface and having at least one mounting hole, and

a cowl cross bar is engaged with the cowl cross bar mounting member to be supported.

7. The front vehicle body structure according to claim 6, wherein the joint includes a reinforcing rib configured to connect the mounting holes of the cowl cross bar mounting member to each other and project outward in a width direction of the vehicle.

8. The front vehicle body structure according to claim 4, wherein a reinforcing rib is formed radially on an inner surface of the joint main body toward an inner side in a width direction of the vehicle.

9. The front vehicle body structure according to claim 4, wherein a first coupling groove is configured to be inclined toward a front lower portion of the vehicle in a vehicle lateral direction of the joint main body in the upper portion of the joint, so that a front end of the front pillar upper element is coupled with the first coupling groove.

10. The front vehicle body structure according to claim 4, wherein a second coupling groove is formed on an inner surface of the joint main body toward an inner side of the joint main body in a width direction of the vehicle to insert and couple a tip end of the front pillar element in a lateral direction of the vehicle.

11. The front vehicle body structure according to claim 4, wherein the fender upper element is inserted into an interior of the joint body and is coupled with an inner surface of the front pillar element in a vehicle width direction of the front pillar element, and the fender upper element is coupled with the inner surface of the front pillar element and the joint body, respectively.

12. The front vehicle body structure according to claim 3, wherein the front pillar upper element has a plurality of sections that adjoin each other.

13. The front vehicle body structure according to claim 12, wherein the plurality of segments are formed to include segments having a square shape and sharing an adjacent partition wall.

14. The front vehicle body structure according to claim 4, wherein a plurality of radial reinforcing ribs are formed below a hood hinge mounting part of the joint main body.

15. The front vehicle body structure according to claim 5, wherein a mounting boss protrudes inside the front pillar element in the door hinge member mounting part.

16. The front vehicle body structure according to claim 6, wherein an assembly boss protrudes in the cowl cross bar, and an assembly bolt is inserted into the assembly boss to engage the assembly boss with the cowl cross bar.

17. The front vehicle body structure according to claim 16, wherein the cowl cross bar includes a flange, and the flange is configured to extend in a longitudinal direction and a lateral direction of the vehicle by an assembly bolt formed to pass through the flange, and to engage with a side outer panel provided at an outer portion in a width direction of the vehicle.